From d51df88fec3d3523ee1e872156ebbc62b94095cf Mon Sep 17 00:00:00 2001
From: DTieman <djurre@b302.nl>
Date: Fri, 19 Apr 2024 23:05:56 +0200
Subject: [PATCH] Garbage collection setup that might be needed later

---
 MauMau-Server.csproj |  2 ++
 Program.cs           | 13 +++++++++++++
 Room/Room.cs         |  2 +-
 Room/RoomManager.cs  | 11 +++++++++++
 4 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/MauMau-Server.csproj b/MauMau-Server.csproj
index 476e59d..d1cec05 100644
--- a/MauMau-Server.csproj
+++ b/MauMau-Server.csproj
@@ -7,6 +7,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Hangfire.Core" Version="1.8.12" />
+    <PackageReference Include="Hangfire.MemoryStorage" Version="1.8.0" />
     <PackageReference Include="Microsoft.AspNet.SignalR" Version="2.4.3" />
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="7.0.3" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="6.4.0" />
diff --git a/Program.cs b/Program.cs
index fe48a95..057d2f3 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,3 +1,5 @@
+using Hangfire;
+using Hangfire.MemoryStorage;
 using MauMau_Server.Websockets;
 
 var builder = WebApplication.CreateBuilder(args);
@@ -9,6 +11,14 @@ services.AddControllers();
 services.AddEndpointsApiExplorer();
 services.AddSwaggerGen();
 services.AddScoped<IRoomManager, RoomManager>();
+// var roomManager = services.BuildServiceProvider().GetRequiredService<IRoomManager>();
+//
+// services.AddHangfire((sp, config) =>
+// {
+//     config.UseRecommendedSerializerSettings();
+//     config.UseMemoryStorage();
+// });
+// services.AddHangfireServer();
 
 var app = builder.Build();
 
@@ -26,6 +36,9 @@ var webSocketOptions = new WebSocketOptions()
 
 app.UseWebSockets(webSocketOptions);
 
+// var recurringJobManager = app.Services.GetRequiredService<IRecurringJobManagerV2>();
+// recurringJobManager.AddOrUpdate("1", () => roomManager.ClearGhostRooms(), Cron.Hourly);
+
 app.UseCors(policyBuilder =>
 {
     policyBuilder.AllowAnyOrigin();
diff --git a/Room/Room.cs b/Room/Room.cs
index b89e655..9081ff4 100644
--- a/Room/Room.cs
+++ b/Room/Room.cs
@@ -99,7 +99,7 @@ public class Room
         return _connections.Select(connection => connection.Socket).ToList();
     }
 
-    private bool IsEmpty()
+    public bool IsEmpty()
     {
         return _connections.Count == 0;
     }
diff --git a/Room/RoomManager.cs b/Room/RoomManager.cs
index 2280be2..4b9dab2 100644
--- a/Room/RoomManager.cs
+++ b/Room/RoomManager.cs
@@ -31,6 +31,16 @@ public class RoomManager : IRoomManager
     {
         return Rooms.ContainsKey(roomId);
     }
+    
+    public void ClearGhostRooms()
+    {
+        var ghostRooms = Rooms.Where(room => room.Value.IsEmpty());
+        foreach (var room in ghostRooms)
+        {
+            GC.Collect(GC.GetGeneration(room.Value));
+            RemoveRoom(room.Key);
+        }
+    }
 }
 
 public interface IRoomManager
@@ -40,4 +50,5 @@ public interface IRoomManager
     public List<string> GetAllRooms();
     public void RemoveRoom(string roomId);
     public bool RoomExists(string roomId);
+    public void ClearGhostRooms();
 }
\ No newline at end of file